Monitor goes black
Sorry to have to tell you this, but this is common in LCD monitors. The reason that it is going black when it boots is for one of two reasons. You either have a bad power supply that powers your LCD or your LCD's backlight is blown. These can be repaired or you can purchase a new one. But if it goes black 9 times out of 10 is because the backlight is bad. These can be repaired!
Hi Jack Duncan, I want to help you with your question, but I need more information from you. Can you please add details in the comment box?i moved you out of computers , off topic there.
if this thing is old it needs repair.
if the fuses are not blown and 12vdc reaches all power pins on the head end , the unit is bad. RIP
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